Accession No

3338

Brief Description

resistance box, by Cambridge Instrument Company Ltd., English, 1930 (c)

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1929

Latest Date

1930

Inscription Date

Material

wood; plastic (ebonite); metal (brass, other)

Dimensions

length 254mm; breadth 101mm; height 202mm

Special Collection

Provenance

Transferred from Department of Engineering, University of Cambridge, Cambridge, England, 1986.

Inscription

‘CAMBRIDGE INSTRUMENT CO. LTD., ENGLAND
LOW INDUCTANCE RATIOS No. L-35128 (with logo)’ (on top)
‘ENG. LAB.
CAMB. UNIV.’ (on top, added)

Description Notes

Rectangular wooden box with ebonite top; seven brass terminals; brass blocks with receptors for seven plugs; six brass and ebonite plugs; six coils suspended from underside of top plate; metallic shielding inside box connected to terminal marked ‘SHIELD’.

Condition: good; incomplete (one plug missing; one mismatched with others).

References

Events